Poland's Amazing Christian ... Salt Mine?

From the outside, Wieliczka Salt Mine doesn’t look extraordinary. It looks extremely well-kept for a place that hasn’t mined any salt for over ten years, but 600 yards below ground it holds an astonishing secret.

From the outside, Wieliczka Salt Mine doesnt look extraordinary. It looks extremely well kept for a place that hasn't mined any salt for over ten years, but apart from that it looks ordinary. However, over 600 feet below ground, it holds an astonishing secret. This is the salt mine that became an art gallery, cathedral and underground lake.